Combine cold heavy cream, skim milk, vanilla syrup, pumpkin, and pumpkin pie spice. I like to use the frother to first whisk it together. Once the mixture is combined, tilt the frother at a 45° angle just under the surface and froth until smooth and creamy.
To assemble the cold brew, fill cup with ice, add two pumps of vanilla syrup (about 1 tablespoon), pour cold brew coffee over ice leaving room at the top for the pumpkin cream. Pour or spoon pumpkin cream mixture on top of cold brew and dust with additional pumpkin pie spice.